â¢ 1958 Code of Ethics for Government Service7 â¢ Senate Select Committee on Standards and Conduct (1964) â¢ Select Committee on ethics (1977) â¢ House Committee on Standards of Official Conduct (1967) â¢ Committee on Ethics (2011) â¢ Congressional Ethics Office (2008) â¢ Mechanism â censure
NH4I will completely dissolve in ammonium and iodide ions: of which I-is neutral and NH4+ is quite a weak acid (pKa = 9.25). (The molar standard solution of NH4I will have pH approx. 4.6).
More precisely it is the negative of the logarithm to base 10 of the activity of the hydrogen ion. Solutions with a pH less than 7 are acidic and solutions with a pH greater than 7 are basic. Pure water is neutral, being neither an acid nor a base. Contrary to popular belief, the pH value can be less than 0 or greater than 14 for very strong acids and bases respectively.